In a Step Down Transformer, Turns Ratio is 5:1, the Primary Current is 10 A and the Secondary Current is

By Aina Parasher|Updated : June 30th, 2022

In a step down transformer, turns ratio is 5:1, the primary current is 10 A and the secondary current is-

  1. 2 A
  2. 50 A
  3. 5 A
  4. 15 A

Answer: Option B. 50 A

In a step down transformer, turns ratio is 5:1, the primary current is 10 A and the secondary current is 50 A.

Solution

The transformer works on the principle of MMF balance.

I1N1=I2N2

I1/I2=N1/N2

Step down transformer turns ratio is 5.

N1/N2=5

The primary current (I1) is 10 A. Secondary current (I2) is 

I2=I1×N1/N2=10×5=50 A.

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